Rest-frame equivalent width of Mg II vs. projected separation of the absorbing galaxy. Black symbols represent direct data from Huang et al. (2021). Olive symbols mark average W_r values weighted by the probability distribution function (PDF) of a Kaplan-Meier estimator of detections and non-detections in the ρ-bin (details in the text). The green line shows the statistical prediction of the ${\overline{W}}_r(R)$ using Eqs. (3) and (4) for the case κ = 1. The function f(W) is taken from Zhu & Ménard (2013), extrapolated to ⟨z⟩ = 0.215, while ϕ(z, L) is from Bouwens et al. (2021) with L_min/L^⋆ = 0.03 and L_max/L^⋆ = 7.5. The shaded region propagates measurement errors of both statistics. The green dashed portion indicates the weak-Mg II regime where f(W) is incomplete. The dotted blue line shows the statistical prediction of ${\overline{W}}_r(R_{\kappa })$, applying a low-redshift extrapolation of κ = κ(ρ) proposed by Schroetter et al. (2021) to model an independent data set.